src/arch/arm/remote_gdb.cc - public/gem5 - Git at Google

 /*
  * Copyright 2014 Google Inc.
  * Copyright (c) 2010, 2013 ARM Limited
  * All rights reserved
  *
  * The license below extends only to copyright in the software and shall
  * not be construed as granting a license to any other intellectual
  * property including but not limited to intellectual property relating
  * to a hardware implementation of the functionality of the software
  * licensed hereunder.  You may use the software subject to the license
  * terms below provided that you ensure that this notice is replicated
  * unmodified and in its entirety in all distributions of the software,
  * modified or unmodified, in source code or in binary form.
  *
  * Copyright (c) 2002-2005 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met: redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer;
  * redistributions in binary form must reproduce the above copyright
  * notice, this list of conditions and the following disclaimer in the
  * documentation and/or other materials provided with the distribution;
  * neither the name of the copyright holders nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Authors: Nathan Binkert
  *          William Wang
  */

 /*
  * Copyright (c) 1990, 1993 The Regents of the University of California
  * All rights reserved
  *
  * This software was developed by the Computer Systems Engineering group
  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
  * contributed to Berkeley.
  *
  * All advertising materials mentioning features or use of this software
  * must display the following acknowledgement:
  *      This product includes software developed by the University of
  *      California, Lawrence Berkeley Laboratories.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
  *      This product includes software developed by the University of
  *      California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  *      @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
  */

 /*-
  * Copyright (c) 2001 The NetBSD Foundation, Inc.
  * All rights reserved.
  *
  * This code is derived from software contributed to The NetBSD Foundation
  * by Jason R. Thorpe.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
  *      This product includes software developed by the NetBSD
  *      Foundation, Inc. and its contributors.
  * 4. Neither the name of The NetBSD Foundation nor the names of its
  *    contributors may be used to endorse or promote products derived
  *    from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */

 /*
  * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
  *
  * Taken from NetBSD
  *
  * "Stub" to allow remote cpu to debug over a serial line using gdb.
  */

 #include <sys/signal.h>
 #include <unistd.h>

 #include <string>

 #include "arch/arm/decoder.hh"
 #include "arch/arm/pagetable.hh"
 #include "arch/arm/registers.hh"
 #include "arch/arm/remote_gdb.hh"
 #include "arch/arm/system.hh"
 #include "arch/arm/utility.hh"
 #include "arch/arm/vtophys.hh"
 #include "base/chunk_generator.hh"
 #include "base/intmath.hh"
 #include "base/remote_gdb.hh"
 #include "base/socket.hh"
 #include "base/trace.hh"
 #include "cpu/static_inst.hh"
 #include "cpu/thread_context.hh"
 #include "cpu/thread_state.hh"
 #include "debug/GDBAcc.hh"
 #include "debug/GDBMisc.hh"
 #include "mem/page_table.hh"
 #include "mem/physical.hh"
 #include "mem/port.hh"
 #include "sim/full_system.hh"
 #include "sim/system.hh"

 using namespace std;
 using namespace ArmISA;

 RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc)
     : BaseRemoteGDB(_system, tc, GDB_REG_BYTES)
 {
 }

 /*
  * Determine if the mapping at va..(va+len) is valid.
  */
 bool
 RemoteGDB::acc(Addr va, size_t len)
 {
     if (FullSystem) {
         for (ChunkGenerator gen(va, len, PageBytes); !gen.done(); gen.next()) {
             if (!virtvalid(context, gen.addr())) {
                 DPRINTF(GDBAcc, "acc:   %#x mapping is invalid\n", va);
                 return false;
             }
         }

         DPRINTF(GDBAcc, "acc:   %#x mapping is valid\n", va);
         return true;
     } else {
         TlbEntry entry;
         //Check to make sure the first byte is mapped into the processes address
         //space.
         if (context->getProcessPtr()->pTable->lookup(va, entry))
             return true;
         return false;
     }
 }

 /*
  * Translate the kernel debugger register format into the GDB register
  * format.
  */
 void
 RemoteGDB::getregs()
 {
     DPRINTF(GDBAcc, "getregs in remotegdb \n");

     memset(gdbregs.regs, 0, gdbregs.bytes());

     if (inAArch64(context)) {  // AArch64
         // x0-x30
         for (int i = 0; i < 31; ++i)
             gdbregs.regs64[GDB64_X0 + i] = context->readIntReg(INTREG_X0 + i);
         gdbregs.regs64[GDB64_SPX] = context->readIntReg(INTREG_SPX);
         // pc
         gdbregs.regs64[GDB64_PC] = context->pcState().pc();
         // cpsr
         gdbregs.regs64[GDB64_CPSR] =
             context->readMiscRegNoEffect(MISCREG_CPSR);
         // v0-v31
         for (int i = 0; i < 128; i += 4) {
             int gdboff = GDB64_V0_32 + i;
             gdbregs.regs32[gdboff + 0] = context->readFloatRegBits(i + 2);
             gdbregs.regs32[gdboff + 1] = context->readFloatRegBits(i + 3);
             gdbregs.regs32[gdboff + 2] = context->readFloatRegBits(i + 0);
             gdbregs.regs32[gdboff + 3] = context->readFloatRegBits(i + 1);
         }
     } else {  // AArch32
         // R0-R15 supervisor mode
         gdbregs.regs32[GDB32_R0 + 0] = context->readIntReg(INTREG_R0);
         gdbregs.regs32[GDB32_R0 + 1] = context->readIntReg(INTREG_R1);
         gdbregs.regs32[GDB32_R0 + 2] = context->readIntReg(INTREG_R2);
         gdbregs.regs32[GDB32_R0 + 3] = context->readIntReg(INTREG_R3);
         gdbregs.regs32[GDB32_R0 + 4] = context->readIntReg(INTREG_R4);
         gdbregs.regs32[GDB32_R0 + 5] = context->readIntReg(INTREG_R5);
         gdbregs.regs32[GDB32_R0 + 6] = context->readIntReg(INTREG_R6);
         gdbregs.regs32[GDB32_R0 + 7] = context->readIntReg(INTREG_R7);
         gdbregs.regs32[GDB32_R0 + 8] = context->readIntReg(INTREG_R8);
         gdbregs.regs32[GDB32_R0 + 9] = context->readIntReg(INTREG_R9);
         gdbregs.regs32[GDB32_R0 + 10] = context->readIntReg(INTREG_R10);
         gdbregs.regs32[GDB32_R0 + 11] = context->readIntReg(INTREG_R11);
         gdbregs.regs32[GDB32_R0 + 12] = context->readIntReg(INTREG_R12);
         gdbregs.regs32[GDB32_R0 + 13] = context->readIntReg(INTREG_SP);
         gdbregs.regs32[GDB32_R0 + 14] = context->readIntReg(INTREG_LR);
         gdbregs.regs32[GDB32_R0 + 15] = context->pcState().pc();

         // CPSR
         gdbregs.regs32[GDB32_CPSR] = context->readMiscRegNoEffect(MISCREG_CPSR);

         // vfpv3/neon floating point registers (32 double or 64 float)
         for (int i = 0; i < NumFloatV7ArchRegs; ++i)
             gdbregs.regs32[GDB32_F0 + i] = context->readFloatRegBits(i);

         // FPSCR
         gdbregs.regs32[GDB32_FPSCR] =
             context->readMiscRegNoEffect(MISCREG_FPSCR);
     }
 }

 /*
  * Translate the GDB register format into the kernel debugger register
  * format.
  */
 void
 RemoteGDB::setregs()
 {

     DPRINTF(GDBAcc, "setregs in remotegdb \n");
     if (inAArch64(context)) {  // AArch64
         // x0-x30
         for (int i = 0; i < 31; ++i)
             context->setIntReg(INTREG_X0 + i, gdbregs.regs64[GDB64_X0 + i]);
         // pc
         context->pcState(gdbregs.regs64[GDB64_PC]);
         // cpsr
         context->setMiscRegNoEffect(MISCREG_CPSR, gdbregs.regs64[GDB64_CPSR]);
         // Update the stack pointer. This should be done after
         // updating CPSR/PSTATE since that might affect how SPX gets
         // mapped.
         context->setIntReg(INTREG_SPX, gdbregs.regs64[GDB64_SPX]);
         // v0-v31
         for (int i = 0; i < 128; i += 4) {
             int gdboff = GDB64_V0_32 + i;
             context->setFloatRegBits(i + 2, gdbregs.regs32[gdboff + 0]);
             context->setFloatRegBits(i + 3, gdbregs.regs32[gdboff + 1]);
             context->setFloatRegBits(i + 0, gdbregs.regs32[gdboff + 2]);
             context->setFloatRegBits(i + 1, gdbregs.regs32[gdboff + 3]);
         }
     } else {  // AArch32
         // R0-R15 supervisor mode
         // arm registers are 32 bits wide, gdb registers are 64 bits wide
         // two arm registers are packed into one gdb register (little endian)
         context->setIntReg(INTREG_R0, gdbregs.regs32[GDB32_R0 + 0]);
         context->setIntReg(INTREG_R1, gdbregs.regs32[GDB32_R0 + 1]);
         context->setIntReg(INTREG_R2, gdbregs.regs32[GDB32_R0 + 2]);
         context->setIntReg(INTREG_R3, gdbregs.regs32[GDB32_R0 + 3]);
         context->setIntReg(INTREG_R4, gdbregs.regs32[GDB32_R0 + 4]);
         context->setIntReg(INTREG_R5, gdbregs.regs32[GDB32_R0 + 5]);
         context->setIntReg(INTREG_R6, gdbregs.regs32[GDB32_R0 + 6]);
         context->setIntReg(INTREG_R7, gdbregs.regs32[GDB32_R0 + 7]);
         context->setIntReg(INTREG_R8, gdbregs.regs32[GDB32_R0 + 8]);
         context->setIntReg(INTREG_R9, gdbregs.regs32[GDB32_R0 + 9]);
         context->setIntReg(INTREG_R10, gdbregs.regs32[GDB32_R0 + 10]);
         context->setIntReg(INTREG_R11, gdbregs.regs32[GDB32_R0 + 11]);
         context->setIntReg(INTREG_R12, gdbregs.regs32[GDB32_R0 + 12]);
         context->setIntReg(INTREG_SP, gdbregs.regs32[GDB32_R0 + 13]);
         context->setIntReg(INTREG_LR, gdbregs.regs32[GDB32_R0 + 14]);
         context->pcState(gdbregs.regs32[GDB32_R0 + 7]);

         //CPSR
         context->setMiscRegNoEffect(MISCREG_CPSR, gdbregs.regs32[GDB32_CPSR]);

         //vfpv3/neon floating point registers (32 double or 64 float)
         for (int i = 0; i < NumFloatV7ArchRegs; ++i)
             context->setFloatRegBits(i, gdbregs.regs32[GDB32_F0 + i]);

         //FPSCR
         context->setMiscReg(MISCREG_FPSCR, gdbregs.regs32[GDB32_FPSCR]);
     }
 }

 // Write bytes to kernel address space for debugger.
 bool
 RemoteGDB::write(Addr vaddr, size_t size, const char *data)
 {
     return BaseRemoteGDB::write(vaddr, size, data);
 }
	/*
	* Copyright 2014 Google Inc.
	* Copyright (c) 2010, 2013 ARM Limited
	* All rights reserved
	*
	* The license below extends only to copyright in the software and shall
	* not be construed as granting a license to any other intellectual
	* property including but not limited to intellectual property relating
	* to a hardware implementation of the functionality of the software
	* licensed hereunder. You may use the software subject to the license
	* terms below provided that you ensure that this notice is replicated
	* unmodified and in its entirety in all distributions of the software,
	* modified or unmodified, in source code or in binary form.
	*
	* Copyright (c) 2002-2005 The Regents of The University of Michigan
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met: redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer;
	* redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution;
	* neither the name of the copyright holders nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* Authors: Nathan Binkert
	* William Wang
	*/

	/*
	* Copyright (c) 1990, 1993 The Regents of the University of California
	* All rights reserved
	*
	* This software was developed by the Computer Systems Engineering group
	* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
	* contributed to Berkeley.
	*
	* All advertising materials mentioning features or use of this software
	* must display the following acknowledgement:
	* This product includes software developed by the University of
	* California, Lawrence Berkeley Laboratories.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. All advertising materials mentioning features or use of this software
	* must display the following acknowledgement:
	* This product includes software developed by the University of
	* California, Berkeley and its contributors.
	* 4. Neither the name of the University nor the names of its contributors
	* may be used to endorse or promote products derived from this software
	* without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	*
	* @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
	*/

	/*-
	* Copyright (c) 2001 The NetBSD Foundation, Inc.
	* All rights reserved.
	*
	* This code is derived from software contributed to The NetBSD Foundation
	* by Jason R. Thorpe.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. All advertising materials mentioning features or use of this software
	* must display the following acknowledgement:
	* This product includes software developed by the NetBSD
	* Foundation, Inc. and its contributors.
	* 4. Neither the name of The NetBSD Foundation nor the names of its
	* contributors may be used to endorse or promote products derived
	* from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
	* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	* POSSIBILITY OF SUCH DAMAGE.
	*/

	/*
	* $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
	*
	* Taken from NetBSD
	*
	* "Stub" to allow remote cpu to debug over a serial line using gdb.
	*/

	#include <sys/signal.h>
	#include <unistd.h>

	#include <string>

	#include "arch/arm/decoder.hh"
	#include "arch/arm/pagetable.hh"
	#include "arch/arm/registers.hh"
	#include "arch/arm/remote_gdb.hh"
	#include "arch/arm/system.hh"
	#include "arch/arm/utility.hh"
	#include "arch/arm/vtophys.hh"
	#include "base/chunk_generator.hh"
	#include "base/intmath.hh"
	#include "base/remote_gdb.hh"
	#include "base/socket.hh"
	#include "base/trace.hh"
	#include "cpu/static_inst.hh"
	#include "cpu/thread_context.hh"
	#include "cpu/thread_state.hh"
	#include "debug/GDBAcc.hh"
	#include "debug/GDBMisc.hh"
	#include "mem/page_table.hh"
	#include "mem/physical.hh"
	#include "mem/port.hh"
	#include "sim/full_system.hh"
	#include "sim/system.hh"

	using namespace std;
	using namespace ArmISA;

	RemoteGDB::RemoteGDB(System _system, ThreadContext tc)
	: BaseRemoteGDB(_system, tc, GDB_REG_BYTES)
	{
	}

	/*
	* Determine if the mapping at va..(va+len) is valid.
	*/
	bool
	RemoteGDB::acc(Addr va, size_t len)
	{
	if (FullSystem) {
	for (ChunkGenerator gen(va, len, PageBytes); !gen.done(); gen.next()) {
	if (!virtvalid(context, gen.addr())) {
	DPRINTF(GDBAcc, "acc: %#x mapping is invalid\n", va);
	return false;
	}
	}

	DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va);
	return true;
	} else {
	TlbEntry entry;
	//Check to make sure the first byte is mapped into the processes address
	//space.
	if (context->getProcessPtr()->pTable->lookup(va, entry))
	return true;
	return false;
	}
	}

	/*
	* Translate the kernel debugger register format into the GDB register
	* format.
	*/
	void
	RemoteGDB::getregs()
	{
	DPRINTF(GDBAcc, "getregs in remotegdb \n");

	memset(gdbregs.regs, 0, gdbregs.bytes());

	if (inAArch64(context)) { // AArch64
	// x0-x30
	for (int i = 0; i < 31; ++i)
	gdbregs.regs64[GDB64_X0 + i] = context->readIntReg(INTREG_X0 + i);
	gdbregs.regs64[GDB64_SPX] = context->readIntReg(INTREG_SPX);
	// pc
	gdbregs.regs64[GDB64_PC] = context->pcState().pc();
	// cpsr
	gdbregs.regs64[GDB64_CPSR] =
	context->readMiscRegNoEffect(MISCREG_CPSR);
	// v0-v31
	for (int i = 0; i < 128; i += 4) {
	int gdboff = GDB64_V0_32 + i;
	gdbregs.regs32[gdboff + 0] = context->readFloatRegBits(i + 2);
	gdbregs.regs32[gdboff + 1] = context->readFloatRegBits(i + 3);
	gdbregs.regs32[gdboff + 2] = context->readFloatRegBits(i + 0);
	gdbregs.regs32[gdboff + 3] = context->readFloatRegBits(i + 1);
	}
	} else { // AArch32
	// R0-R15 supervisor mode
	gdbregs.regs32[GDB32_R0 + 0] = context->readIntReg(INTREG_R0);
	gdbregs.regs32[GDB32_R0 + 1] = context->readIntReg(INTREG_R1);
	gdbregs.regs32[GDB32_R0 + 2] = context->readIntReg(INTREG_R2);
	gdbregs.regs32[GDB32_R0 + 3] = context->readIntReg(INTREG_R3);
	gdbregs.regs32[GDB32_R0 + 4] = context->readIntReg(INTREG_R4);
	gdbregs.regs32[GDB32_R0 + 5] = context->readIntReg(INTREG_R5);
	gdbregs.regs32[GDB32_R0 + 6] = context->readIntReg(INTREG_R6);
	gdbregs.regs32[GDB32_R0 + 7] = context->readIntReg(INTREG_R7);
	gdbregs.regs32[GDB32_R0 + 8] = context->readIntReg(INTREG_R8);
	gdbregs.regs32[GDB32_R0 + 9] = context->readIntReg(INTREG_R9);
	gdbregs.regs32[GDB32_R0 + 10] = context->readIntReg(INTREG_R10);
	gdbregs.regs32[GDB32_R0 + 11] = context->readIntReg(INTREG_R11);
	gdbregs.regs32[GDB32_R0 + 12] = context->readIntReg(INTREG_R12);
	gdbregs.regs32[GDB32_R0 + 13] = context->readIntReg(INTREG_SP);
	gdbregs.regs32[GDB32_R0 + 14] = context->readIntReg(INTREG_LR);
	gdbregs.regs32[GDB32_R0 + 15] = context->pcState().pc();

	// CPSR
	gdbregs.regs32[GDB32_CPSR] = context->readMiscRegNoEffect(MISCREG_CPSR);

	// vfpv3/neon floating point registers (32 double or 64 float)
	for (int i = 0; i < NumFloatV7ArchRegs; ++i)
	gdbregs.regs32[GDB32_F0 + i] = context->readFloatRegBits(i);

	// FPSCR
	gdbregs.regs32[GDB32_FPSCR] =
	context->readMiscRegNoEffect(MISCREG_FPSCR);
	}
	}

	/*
	* Translate the GDB register format into the kernel debugger register
	* format.
	*/
	void
	RemoteGDB::setregs()
	{

	DPRINTF(GDBAcc, "setregs in remotegdb \n");
	if (inAArch64(context)) { // AArch64
	// x0-x30
	for (int i = 0; i < 31; ++i)
	context->setIntReg(INTREG_X0 + i, gdbregs.regs64[GDB64_X0 + i]);
	// pc
	context->pcState(gdbregs.regs64[GDB64_PC]);
	// cpsr
	context->setMiscRegNoEffect(MISCREG_CPSR, gdbregs.regs64[GDB64_CPSR]);
	// Update the stack pointer. This should be done after
	// updating CPSR/PSTATE since that might affect how SPX gets
	// mapped.
	context->setIntReg(INTREG_SPX, gdbregs.regs64[GDB64_SPX]);
	// v0-v31
	for (int i = 0; i < 128; i += 4) {
	int gdboff = GDB64_V0_32 + i;
	context->setFloatRegBits(i + 2, gdbregs.regs32[gdboff + 0]);
	context->setFloatRegBits(i + 3, gdbregs.regs32[gdboff + 1]);
	context->setFloatRegBits(i + 0, gdbregs.regs32[gdboff + 2]);
	context->setFloatRegBits(i + 1, gdbregs.regs32[gdboff + 3]);
	}
	} else { // AArch32
	// R0-R15 supervisor mode
	// arm registers are 32 bits wide, gdb registers are 64 bits wide
	// two arm registers are packed into one gdb register (little endian)
	context->setIntReg(INTREG_R0, gdbregs.regs32[GDB32_R0 + 0]);
	context->setIntReg(INTREG_R1, gdbregs.regs32[GDB32_R0 + 1]);
	context->setIntReg(INTREG_R2, gdbregs.regs32[GDB32_R0 + 2]);
	context->setIntReg(INTREG_R3, gdbregs.regs32[GDB32_R0 + 3]);
	context->setIntReg(INTREG_R4, gdbregs.regs32[GDB32_R0 + 4]);
	context->setIntReg(INTREG_R5, gdbregs.regs32[GDB32_R0 + 5]);
	context->setIntReg(INTREG_R6, gdbregs.regs32[GDB32_R0 + 6]);
	context->setIntReg(INTREG_R7, gdbregs.regs32[GDB32_R0 + 7]);
	context->setIntReg(INTREG_R8, gdbregs.regs32[GDB32_R0 + 8]);
	context->setIntReg(INTREG_R9, gdbregs.regs32[GDB32_R0 + 9]);
	context->setIntReg(INTREG_R10, gdbregs.regs32[GDB32_R0 + 10]);
	context->setIntReg(INTREG_R11, gdbregs.regs32[GDB32_R0 + 11]);
	context->setIntReg(INTREG_R12, gdbregs.regs32[GDB32_R0 + 12]);
	context->setIntReg(INTREG_SP, gdbregs.regs32[GDB32_R0 + 13]);
	context->setIntReg(INTREG_LR, gdbregs.regs32[GDB32_R0 + 14]);
	context->pcState(gdbregs.regs32[GDB32_R0 + 7]);

	//CPSR
	context->setMiscRegNoEffect(MISCREG_CPSR, gdbregs.regs32[GDB32_CPSR]);

	//vfpv3/neon floating point registers (32 double or 64 float)
	for (int i = 0; i < NumFloatV7ArchRegs; ++i)
	context->setFloatRegBits(i, gdbregs.regs32[GDB32_F0 + i]);

	//FPSCR
	context->setMiscReg(MISCREG_FPSCR, gdbregs.regs32[GDB32_FPSCR]);
	}
	}

	// Write bytes to kernel address space for debugger.
	bool
	RemoteGDB::write(Addr vaddr, size_t size, const char *data)
	{
	return BaseRemoteGDB::write(vaddr, size, data);
	}